Designed by the British Ministry of Information during WWII, this Freedom Is In Peril, Defend It With All Your Might poster is a variation on the original Keep Calm and Carry Onposter used to motivate the public and boost morale. Our Freedom Is In Peril, Defend It With All Your Might poster is faithful to the original. The Freedom Is In Peril, Defend It With All Your Might poster is circa 1939.